APPLING HIGH WATER PRESSURES EJECTOR SYSTEM TO CONTROL DUST IN QUANG NINH UNDERGROUND COAL MINE

In recent years, in Quang Ninh coal underground mine, longwall mining has been increasingly applied to meet the energy demand. This has resulted in the potential for increased mining dust. Coal dust is not only harmful to workers but also creates a risk for coal dust explosions in the mine. Therefore, in order to control the mine dust problem, it is necessary to develop a set of dust removal equipment suitable for underground coal mining. High-pressure water ejector system is selected to control dust in Quang Ninh mine. In addition, parameters and criteria for the design of the high-pressure water jet ejector systems have been presented.